Pea-huller.



R. W. J. STEWART. PEA EULLBR.

APPLIo'ATIoN FILED un. io, 1909.

Patented Aug. 31, 1909.

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R. W. J. STEWART.

PEA HULLER. n PLIoATIoN FILED un. 1o, 190e.

Patented Aug. 31, 1909.

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R. W. J. STEWART PEA HULLER. APPLICATION FILED APR. 1o, 1909.

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NITED FATENI FFIQE.

REUEE'N W. J. STEWART, or" cHATTANoGA, TENNESSEE, AssIeNoR To WLLIAM HOWARD AND W. P. MOORE, or cHATTANooeA, TENNESSEE.

PE A-I-IULLER.

V Specieaton of Letters Patent.

Patented. Aug. 31, 1909.

Application led April 10, 1909. Serial No. 489,117.

To all whom it may concern:

Be it known that I, REUBEN W. J. STEW- ART, a citizen of the United States, residing at Chattanooga, in the county of Hamilton and State of Tennessee, have invented cer-1 chine. Fig. 2 is an end View of the same. Fig. 3 1s a vertical longitudinal sectional view. Fig. 4 1s a detail cross sectional view through the casing. Fig. 5 is a detail sectional view longitudinally of the hulling rolls, showing one of said rolls in section.

Similar reference numerals designate corresponding parts in all the figures of the drawings.

In the embodiment disclosed, a supporting frame is employed that may be of any suitable character, but as shown, consists of standards 6 with suitable longitudinal beams 7 and 8 and lower cross bars 9. The beams 7 project beyond the standards and are preferably formed into handle grips 10, by which the apparatus can be readily transported.y

Located longitudinally within the frame is a completely inclosed casing 11 of light sheet material, preferably steel, and consisting of upper and lower walls that are curved and have central inset portions 12, forming longitudinal compartments 13. It will be observed that this casing is disposed at an inclination, and arranged longitudinally therein are inclined hulling rolls 14. While these rolls may be constructed in a number of different Ways, in the preferred embodiment, shafts 15 are employed that are journaled in boxes 16 and have heads 17 fixed thereto, these heads being provided in their inner sides with circular grooves 18. The bodies of the rolls are made up wheels 22 of different diameters. to drive the rolls, a main drive shaft 23 is of sections 19 of wood, as shown in Fig. 4,

litted together, and surrounding the shaft. Driven into these sections are radial projecting teeth 20 that operate in close proximity to the inner face of the casing, thus making it impossible for pods of peas to lie stationary and not be carried up through the stationary teeth inside of the casing. The teeth have overlapping but non-interfering `paths of movement, as will be clear 4by reference to Fig. 5.

It will also be noted that the teeth on each roll are arranged in spiral rows and that the teeth of each roll are staggered in lines longitudinally of the roll. Preferably there are six rows to each roll, the teeth being alternately one-half inch apart around the cylinder and one inch apart lengthwise on the cylinder, the rows of teeth around one cylinder intermeshing with those of the other. While this arrangement is important in order to insure the proper movement of the peas down the casing, and at the saine time secure the hulling action, it will be obvious that the arrangement may be changed. Rows of stationary inwardly extending teeth 21 are arranged in the outer sides of the compartments, being driven into the bars 8. The rolls 14 are driven in opposite directions at dierent rates of speed, and for this purpose, the shafts 15 are provided at their upper and projecting ends with intermeshing gear In order journaled upon the end of the machine having the gears 22, and this drive shaft is also provided with a beveled gear 24 meshing with a beveled gear 25, carried by one of the shafts. It will thus be evident that upon the rotation of the shaft 23, the rolls will be revolved in opposite directions at dilferent rates of speed.

The top Wall of thev casing 11, at its upper end, is provided with an inlet opening 26, and a shallow hopper 27 supported upon the upper end of the frame and constituting a connection between the four standards is provided with a delivery opening 28 communicating with the inlet 26. The peas are placed in this hopper 27, as shown in Fig. 3, and are delivered through the openings 28 and 26 into the casing. The bottom wall of the casing 11, contiguous to its lower end, is provided with a discharge opening 29, leading from which is a depending dehvery Yio chute 30, An upwardly and rearwardly inclined .blast conduit 3l is arranged in ythe frame, and the chute 30 communicates with the top of the same, between its ends. The upper endv or the conduit 31 is open, and the lower end, whichvis arranged vertically, as -shown at '32, is also open. A fan casing 33, located within the frame below the casing 1l, has a delivery spout 34, which communicates with the conduit 3l, just above the vertical lower end portion 32. Arranged with'- inthe casing 33 is a re-volving fan 35, which is Aprovidedewith a fan shaft 36, carrying a pulley 37. l l

The main drive shaft v23 is provided at one end with a -large belt wheel 3S Vthat has a handle crank 39, and vthe Vfan shaft may be belted directly to the pulley 37 by a belt, indicated in dotted 'lines in F ig. l, at 40. `Preferably, however, in order to secure a high rate of speed on the part or" the fan, a counters'ha'ft 41 is journaled on the frame, and has a pulley 42 thereon, around which a 'belt 43 passes, said belt also extending around the wheel 38. Another pulley 44, llocated on 'the shalt 41, Vhas a belt 45` extending around the same and around the ,pulley 37. Arranged belowV the lower delivery end 32 of the blast condui`t`31 is a separator shoe, comprising side walls 46 Ywith a forwardly and downwardly inclined bottom 47. y A substantially horizontal screen 48 vis arrangedover the bottom 47. The `rear end of the screen is open, while the `front end isclosed by a transverse wall 481, to which is vpivoted a p'itman '49. This pitman is connected to ya crank V50,formed in the shaft 4:1. n

BriellyV described, the operation of the `machine is as follows: the drive shaft 23, being suitably rotated, if the peas to be hulledare delivered into the upper end o'f the casing,they'will be carried in spiral paths down the same, the pods will be opened, and the .peas released. The peas will lthusrbe operated'upon by the teeth for a comparatively long distance, and as a result, it -is not necessary to'have the rolls of large diameter -in order to drive `them at a very lhigh rate of speed, thus saving much power. This vis a valuable feature, particularly in hand-driven machines, and moreover where the threshing rolls are driven at a high speed, the peas are `apt to be ybroken 'by the llolows delivered to them, Ithereby rendering Jthem va-'lueless for seed. After having passed the entire length of the rolls, they Atall from the 'housing or casing into the blast conduit, .where they are winnowed by -the blast of air `from the anfthe 'hulls and chaff being fblown through the upper or delivery end of the conduit, while the peas fall into 'the oscillating shoe or sieve. The peas pass .through the screen and roll down the inclined'bottom 47, where they are delivered into a suitable receptacle that may be placed therebeneath. rlihc short` pieces and short ends containing faulty peas aredischarged through the rear end ot the shoe, as illustrate Besides the advantages above mentioned, it -may also be stated that by rotating the rolls at dierent rates oi speed, one acts substantially as a concave for the other, and in addition to the coacting threshing action of the rolls, sa-id rolls also cooperate with the stationary teeth. Furthermore the casing or housing for the rolls, being of light sheet metal and having the quality of giving or 'being pliable, if the peas are caught between theends of t-he teeth and the easing, they are not as apt to be split or broken. Furthermore with the arrangement shown, the peas cannot fall through the n'iachine unthreshed, even ii fed into the same while the mechanism is not in operation.

From the foregoing, it is thought that the construction, operation and many advantages ot the herein described invention will be apparent to those skilled in the art, without further description,- and it will be understood that various changes in the size, shape, proportion, and minor details of construction, maybe resorted to without departing from the spirit or sacrificing any oi the advantages of the invention.

Having thus fully described my invention, what l claim as new, and desire to secure by Letters Patent, is

l. In a pea hulling machine, the combination with a casing disposed at an inclination,

of cooperating hulling rolls set at an inclination and arranged longitudinally within the casing, teeth carried by the peripheries of the rolls and having overlapping paths of Ymovement, means 'for rotating the rolls in opposite directions at different rates of speed, means for feeding peas to be hulled into the upper end of the casing, and means for delivering the peas :trom the lower end of the casing.

2. In a pea hulling machine, the combination with a casing disposed at an inclination and comprising top and bottom walls having inset portions forming two longitudinal compartments, longitudinally disposed hulling rolls located respectively in the compartments, means for rotating the rolls in oppoinset, forming separate compartments, the upper wall having an opening at its upper end, the lower wall having an opening at its lower end, inclined rolls located longitudinally within the compartments and having teeth extending into the outer sides of the compartments, a hopper supported on the upper end of the frame and delivering into the upper opening, an upwardly and rearwardly inclined blast conduit having open ends, a chute leading from the lower end of the casing into the conduit between its ends, a fan having a spout communicating with the conduit, a shaking shoe arranged below the lower end ofV the conduit, a drive shaft, and means connected to the drive shaft for rotating the rolls and the fan and for shaking the shoe.

4. In a pea hulling machine, the combination with an elongated completely inclosed casing, of cooperating hulling rolls located longitudinally within the casing, projecting teeth carried by the peripheries of the rolls and having overlapping paths of movement, means for rotating the rolls at different rates of speed and in opposite directions, and means for delivering peas into one end of the casing and discharging them from the other end of said casing.

5. In a pea hulling machine, the combination with a casing having inwardly projecting stationary teeth in its opposite sides, of cooperating rolls disposed longitudinally within the casing and having teeth that operate in close proximity to the casing to insure their engagement with the pods and carry said pods into engagement with the stationary teeth, the teeth of the rolls having overlapping paths of movement, means for feeding material to one end of the rolls, and means for delivering from the opposite ends.

6. In a pea hulling machine, the combination with a casing, of inclined rolls located within the casing and having projecting teeth, means for rotating the rolls at different rates of speed to cause one to act as the concave of the other, stationary teeth coperating with both rolls, means for feeding materialV into the casing at one end only of the rolls, and means for delivering the material from the other ends.

In testimony whereof I atlix my signature, in presence of two witnesses.

REUBEN W. J. STEWART.

Witnesses:

IVM. HOWARD, W. P. MOORE.' 

